Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Solemnity + Carrion Feeder

Prerequisites

• You control another nontoken creature without a -1/-1 counter on it.

Steps

1. 1Activate Carrion Feeder by sacrificing another nontoken creature without a -1/-1 counter on it.
2. 2When the creature dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Solemnity.
3. 3Resolve the Carrion Feeder ability.
4. 4Repeat.

Effects

• Infinite +1/+1 counters on a creature
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers